STR3EM Standard

Local and Internet asset are presented in a progressive playback method.

.st3 and .wiki files can deliver a playlist mix of unlimited local and remote streaming assets:

WMV9 and VC-1 (WMV or ASF) 480p up to 2400mbps (best for backwards compatibility with XP and Vista).

WMV 480p up to 2400mbps encrypted with Windows Media Digital Rights Management.

H.264 (MOV or MP4 with AAC audio) 480p up to 2400mbps  (Windows 7 delivery only).

MPEG-1 MPG

WAV 16-bit 44.1Khz (retail CD quality).

WAV 24-bit 96Khz (high quality studio reference quality).

WMA up to lossless profile.

MP3 up to 320Kbps.

WVX Windows Media streaming file.

Web protocols

HTTP, HTTPS, MMS, RTSP, SOP (with the Sopcast Directshow filter)

STR3EM Professional

Local, MMS, and RTSP asset is instantly seek ready. HTTP and HTTPS asset are presented in a progressive method.

.3em and .3ev can deliver an unlimited list of remote streaming assets preceding a single local asset:

STR3EM File Extension – .3em

Codec: H.264/AVC

Accepted Containers: M2TS, MP4, MKV, and MOV

Advantage: H.264 offers high levels in HD playback performance.

Content providers can deliver any unlimited configuration of H.264 up to 192Mbps. Content providers are responsible for making consumer delivery decisions.

We have successfully tested 50GB .3em files authored from Blu-ray M2TS sources on $399 consumer grade Windows 7 PCs powered with a NVIDIA CUDA GPU.

Subtitles are not available for playback from MKV and M2TS source files and should be omitted at this time.

Audio encoding:

AC3 (Required standard option 1)

DTS (Required standard option 2)

Multi-language tracks in M2TS are compatible.

STR3EM File Extension – .3ev

Codec: VC-1

Accepted Container: WMV

Any standard resolutions up to a maximum of 1280×720, 2-pass VBR only (CBR will not work with STR3EM Pro), average bitrate up to 10Mbps and peak bitrate up to 20Mbps.

Audio encoding: up to 5.1 WMA Professional at any bitrate.

1080p WMV content is not advised for STR3EM Pro due to lack of performance when compared to H.264. Please see our .3em file format above for higher level video delivery.

IMPORTANT: STR3EM Pro does not accept local files encrypted with Windows Digital Rights Management. Internet assets can be encrypted. Please use STR3EM Standard for local encrypted files.

Web protocols

HTTP, HTTPS, MMS, RTSP, SOP (with the Sopcast Directshow filter)

STR3EM Pro Audio Specifications

STR3EM File Extension – .3ea

Codec: PCM WAV 16-bit 44.1Khz, and 24-bit 96Khz

Accepted Container: MKA

Pre-mastering of a disc-at-once style single WAV with cue sheet track times multiplexed using MKV Toolnix and the MKVMerge GUI: http://www.bunkus.org/videotools/mkvtoolnix/

The following list of encoders are verified to produce compliant STR3EM media assets:

X.264

Sonic CineVision

PEGASYS  TMPGEnc

Microsoft Expressions Encoder

Exact Audio Copy (EAC) – CD Master importing for STR3EM authoring